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Biology

Question 1Single Answer

Which of the following contain enzymes for cellular respiration ?

A
Dictyosomes
B
Endoplasmic reticulum
C
lysosomes
D
Mitochondria

Question 2Single Answer

Which one among the following nutrients is a strctural

A
Cell membrane
B
Plasma membrane
C
Cell wall
D
Nucleus

Question 3Single Answer

Which one among the following nutrients is a structural component of the cell wall of plants ?

A
Manganese
B
Potassium
C
Phosphorus
D
Calcium

Question 4Single Answer

Which of the following groups is present in animal cells ?

A
Mitochondria, Cell membrane, Cell wall, Cytoplasm
B
Chloroplasts, Cytoplasm, Vacuole, Nucleus
C
Nucleus, Cell membrane, Mitochondria, Cytoplasm
D
Vacuole, cell membrane, Nucleus, Mitochondria

Question 5Single Answer

For which among the following is not a true fruit ?

A
Apple
B
Date
C
Grape
D
Plum

Question 6Single Answer

Which one of the following is not a constituent of cell membrane ?

A
Cholesterol
B
Glycoplids
C
Proline
D
Phospholipids

Question 7Single Answer

The replication of DNA is a pre-requisite for a eukaryotic cell to undergo division. During the cell cycle, the DNA replicates in

A
S–phase
B
G₁–phase
C
G₂–phase
D
M-phase

Question 8Single Answer

During which stage of mitosis does cytokinesis usually occur in animals ?

A
Phophase
B
Metaphase
C
Anaphase
D
Telophase

Question 9Single Answer

Lysosome arises from

A
endoplasmic reticulum
B
golgi apparatus
C
nucleus
D
mitochondria

Question 10Single Answer

The correct sequence of cell cycle is

A
S, G₁, G₂, M
B
S, M, G₁, G₂
C
G₁, S, G₂, M
D
M, G₁, G₂, S

Question 11Single Answer

Biological membranes are composed of

A
40% proteins and 60% lipids
B
50% proteins and 50% lipids
C
70% proteins and 30% lipids
D
60% proteins and 40% lipids

Question 12Single Answer

F1 particles / oxysome / elementary particles are present in

A
endoplasmic reticulum
B
chloroplast
C
mitochondria
D
golgi complex

Question 13Single Answer

"Endomitosis" refers to

A
division of nucleus without chromosomal division
B
division of chromosome without nuclear division
C
division of cytoplasm
D
None of the above

Question 14Single Answer

When the concentration of water and solutes on either side of the cell membrane is same, the solution is said to be

A
hypertonic
B
isotonic
C
hypotonic
D
None of these

Question 15Single Answer

The function of nucleous is the synthesis of

A
DNA
B
m - RNA
C
r- RNA
D
t - RNA

Question 16Single Answer

Mesosome in a bacterial cell is

A
plasmid
B
connection between two cells
C
plasma membrane infolded for respiration
D
None of these

Question 17Single Answer

In living cels synthesis of ribonoucleic acid (RNA) takes place in :

A
Cytoplasm
B
Nucleus
C
Golgi body
D
Nephron

Question 18Single Answer

The cell organelle storing substances like starch, oil and proteins is

A
Vacuole
B
Lysosome
C
Plastid
D
Golgi body

Question 19Single Answer

Organisms lacking nuclear membrane and cell organelles is called as :

A
Prokaryotes
B
Eukaryotes
C
Protozoa
D
Virus

Question 20Single Answer

Cell organelles that are involved in the waste disposal system of the cell are :

A
Golgi apparatus
B
Lysosomes
C
Chromosomes
D
Ribosomes

Question 21Single Answer

Which one of the following is an organelle that is NOT found in prokaryotic cells ?

A
Cell wall
B
Mitochondria
C
Plasma membrane
D
Ribosome

Question 22Single Answer

Which one of the following cell organelles mainly functions as storehouse of digestive enzymes ?

A
Desmosome
B
Ribosome
C
Lysosome
D
Vacuoles

Question 23Single Answer

Cell wall of any fungus is different from plant in having

A
cellulose
B
chitin
C
cholesterol
D
glycogen

Question 24Single Answer

In prokaryotic organisms, nuclear region is not surrounded by a membrane.This undefined nuclear region is known as

A
Nucleic acid
B
Nucleoid
C
Nucleolus
D
Nucleosome

Question 25Single Answer

Which one of the following functions is not carried out by smooth endoplasmic reticulum ?

A
Transport of materials
B
Synthesis of lipid
C
Synthesis of protein
D
Synthesis of steroid hormone

Question 26Single Answer

Which of the following is the cellular respiratory centre ?

A
Nucleus
B
Mitochondria
C
Ribosome
D
Golgi body

Question 27Single Answer

Which one of the following cell organelles contains DNA ?

A
Golgi apparatus
B
Mitochondrion
C
Lysosome
D
Endoplasmic reticulum

Question 28Single Answer

Movement of materials to different parts of cytoplasm and nucleus is generall carried out by

A
Ribosomes
B
Mitochondria
C
Lysosomes
D
Endoplasmic reticulum

Question 29Single Answer

In mitochondria, ATP synthesizing chemical reactions take place in the

A
Outer membrane
B
Matrix
C
Inner membrane
D
DNA of mitochondria

Question 30Single Answer

Cell wall is not present in cells of

A
Bacteria
B
Plants
C
Fungi
D
Humans

Question 31Single Answer

Which cell organelles have their own DNA and Ribosomes ?

A
Golgi body and Endoplasmic Reticulum
B
Mitochondria and Plastids
C
Lysosome and Golgi body
D
Vacuole and Plastids

Question 32Single Answer

Osmosis is the process of movement of water molecules from its

A
higher concentration to its lower concentration through a cell wall
B
lower concentration to its higher concentration through a fully permeable membrane
C
higher concentration to its lower concentration through a fully permeable membrane
D
higher concentration to its lower concentration through a semi - permeable membrane

Question 33Single Answer

Cell were first discovered by

A
Robert Hooke
B
Leeuwenhoek
C
Purkinje
D
Virchow

Question 34Single Answer

The plasma membrane is

A
permeable
B
impermeable
C
selectively permeable
D
both (a) and (b)

Question 35Single Answer

Nuclear material without cover is found in

A
mycoplasma and green algae
B
bacteria and fungi
C
bacteria and blue green algae
D
none of the above

Question 36Single Answer

The work 'prokaryote' means a cell

A
with many nuclei
B
with one nucleus
C
with diffused nucleus
D
without chloroplast

Question 37Single Answer

Minute structures on bacterial cell are called

A
hair
B
cilia
C
flagella
D
pili

Question 38Single Answer

Cell theory was proposed by

A
Schleiden and Schwann
B
Robert Brown
C
Leeuwenhoek
D
Purkinje

Question 39Single Answer

The undefined nuclear region in a bacteria is

A
nucleoid
B
nucleus
C
chromosome
D
nucleolus

Question 40Single Answer

Nucleus plays a crucial part in

A
metabolism
B
cellular reproduction
C
lipid synthesis
D
protein synthesis

Question 41Single Answer

Which of the following is not present in prokaryotes ?

A
Ribosomes
B
Cell wall
C
Plasma membrane
D
Nuclear membrane

Question 42Single Answer

Chemical nature of carrier molecules facilitating transport across plasma membrane is

A
starchy
B
sugary
C
proteinaceous
D
fatty acidic

Question 43Single Answer

ER remains associated with

A
dictyosomes
B
mitochondria
C
karyotheca
D
chloroplast

Question 44Single Answer

Vacuole is surrounded by

A
plasmalemma
B
cell wall
C
tonoplast
D
plasmodesmata

Question 45Single Answer

The organisms that lack membranes are

A
Viruses
B
Bacteria
C
protozoans
D
Fungi

Question 46Single Answer

The organelle attached to the ER is

A
ribosomes
B
lysosomes
C
golgi bodies
D
proteins

Question 47Single Answer

Golgi bodies help in

A
excertion of steroids
B
storage and secretion
C
translation
D
trnascription

Question 48Single Answer

According to fluid mosaic model plasma membrane is composed of

A
phospholipids, extrinsic and intrinsic proteins
B
phospholipids and oligosaccharides
C
phospholipids and hemicellulose
D
phospholipids and integral glycoproteins

Question 49Single Answer

The presence of .............. organelle is only revealed by electron microscope .

A
chloroplast
B
mitochondria
C
Golgi bodies
D
lysosome

Question 50Single Answer

One of these is the smallest in size

A
Ribosome
B
Lysosome
C
Mitochondria
D
Chloroplast

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Biology

Question 51Single Answer

The SER helps in building the cell membrane. This process is called

A
protein synthesis
B
membrane abiogenesis
C
membrane biogenesis
D
glycogenesis

Question 52Single Answer

Golgi apparatus is involved in the formation of :

A
lysosome
B
vacuoles
C
plastids
D
mitochondria

Question 53Single Answer

DNA is a component of

A
mitochondria
B
chloroplast
C
cytoplasm
D
(a) and (b) both

Question 54Single Answer

One of these is double membrane organelle

A
lysosome
B
mitochondria
C
nucleus
D
endoplasmic reticulum

Question 55Single Answer

The cell organelle containing the flatterned membrane bounded cisternae are located near the nucleus is

A
mitochondria
B
Golgi
C
centioles
D
nucleous

Question 56Single Answer

The entry of mineral ions in a plant cell during absorption is

A
passive absorption
B
active absorption
C
osmosis
D
encocytosis

Question 57Single Answer

The suicide bags of the cells are

A
mitochondria
B
plastids
C
golgi complex
D
ribosomes

Question 58Single Answer

When gene targeting involving gene amplification is attempted in a person’s tissue to treat disease, it is known as :

A
Safety testing
B
Biopiracy
C
Gene therapy
D
Molecular diagnosis

Question 59Single Answer

Vesicles are essential for the normal functioning of the golgi apparatus because

A
they provide energy for chemical reactions
B
they move proteins and lipids between different parts of the organelle
C
they contribute to the structural integrity of the organelle
D
they produce the sugars that are aded to proteins

Question 60Single Answer

Amino Acid chains built by the ribosomes then move to the

A
golgie apparatus
B
lysosome
C
endoplasmic reticulum
D
mitochondria

Question 61Single Answer

Simple tissues are

A
parenchyma, xylem and collenchyma
B
parenchyma, collenchyma and collenchyma
C
parenchyma, collecnhyma and sclerenchyma
D
parenchyma, xylem and phloem

Question 62Single Answer

The living cells providing tensile strength are

A
parenchyma
B
collenchyma
C
sclerenchyma
D
sclerotic cells

Question 63Single Answer

The energy currency of the cell is

A
ADP
B
ATP
C
NADP
D
FADP

Question 64Single Answer

Consider the following statement and choose the correct code .
Assertion (A) : A true nucleus is absent in E. coli and other prokaryotes.
Reason (R) : An undifferentiated, unorganised filbrillar chromosome exists inside the prokayotic cells.
Code :

A
Both (A) and (R) are true and (R) is the correct explanation of (A)
B
Both (A) and (R) are true, but (R) is not the correct explanation of (A)
C
(A) is true, but (R) is false
D
(A) is false, but (R) is true

Question 65Single Answer

Match List – I with List – II and select the correct answer by using the codes given below :
List I List II
A. Ribosome 1. Suidical bag of cell
B. lysosome 2. Protein factory of cells
C. Mitochondria 3. Controller of cell
D. Nucleus 4. Power house of cell
Code :
A B C D

A
2 1 4 3
B
4 3 2 1
C
1 4 2 1
D
3 2 1 4

Question 66Single Answer

Which of the following is the correct sequence of the different phase of cell division ?
1. Anaphase
2. Telophase
3. Prophase
4. Metaphase
Code :

A
1 2 3 4
B
1 3 2 4
C
3 1 4 2
D
3 4 1 2

Question 67Single Answer

Match List – I with List – II and select the correct answer by using the codes given below :
List - I List - II
(physiological processes) (Cell organelles)
A. Photosynthesis 1.Plasma membrane
B. Mineral uptake 2. Chloroplast
C. Respiration 3. Mitochondria
D. Protein synthesis 4. Ribosomes
Code :
A B C D

A
1 2 3 4
B
1 2 4 3
C
2 1 3 4
D
2 1 4 3

Question 68Single Answer

Which of the following is not a true statement about chloroplast and mitochondria ?

A
Each contains a small amount of DNA
B
Neither are componmnents of the endomembrane system
C
Both are membrane less organelles
D
Mitochondria do not synthesise all their proteins

Question 69Single Answer

With reference to the animal cell, which of the following statement are correct ?
1. There is no cell wall in animal cell but the cell is coveredby plasma membrane.
2. Chlorophyll is not found in animal cells.
3. Lysosome occurs in plant cells.
4. Almost in all animal cells, centioles exist.

A
2 and 3 only
B
1, 2 and 3 only
C
1, 2 and 4
D
All of the above

Question 70Single Answer

Consider the following statements rearding osmosis in animal cells :
1. If the water potential of the solution surrounding the cell is o high, the cell shrinks.
2. If the water potential of the solution surrounding the cell is too low, the cell swells and bursts.
3. It is important to maintain a constant water potential inside the animal body.
4. In animal cells, water potential far exceeds the solute potential.
Which of the statements given above is /are correct ?

A
1 and 2
B
3 only
C
4 only
D
2 and 3

Question 71Single Answer

The living content of cell is called protoplasm It is composed of :

A
Cytoplasm only
B
Cytoplasm and meloplasm
C
Nucleoplasm only
D
Cytoplasm, mucleoplasm and other organelles

Question 72Single Answer

Certain parts of a plant can be bent easily without breaking. This flexibility in certain parts, like leaf and stem, can be attributed to the abundance of

A
parenchyma
B
collenchyma
C
sclerenchyma
D
xylem and phloem

Question 73Single Answer

In which one of the following antibody formations takes place ?

A
RBCs
B
Blood Platelets
C
Blood Plasma cells
D
Donnan's membrane

Question 74Single Answer

Average life span of human R.B.C is

A
100 days
B
90 days
C
120 days
D
None of these

Question 75Single Answer

Cells which takes part in secondary growth are named as

A
phloem
B
xylem
C
cambium
D
medullary ray

Question 76Single Answer

Blood and lymph are types of

A
muscular tissue
B
epithelial tissue
C
connective tissue
D
permanent tissue

Question 77Single Answer

pH of human blood is

A
7.4
B
6.2
C
9.0
D
7.5 – 8.0

Question 78Single Answer

The camel's hump is composed of a tissue. It is a type of

A
skeletal tissue
B
areolar tissue
C
adipose tissue
D
muscular tissue

Question 79Single Answer

A drop of blood contains .

A
about 10,000 cells
B
about 100,000 cells
C
several million cells
D
less than 25,000 cells

Question 80Single Answer

Human blood contains ................ plasma .

A
35%
B
40%
C
50%
D
55%

Question 81Single Answer

Assertion (A) : Red blood cells burst when placed in water.
Reason (R): Due to osmosis, water enters into red blood cells.
In the light of the above statement, choose the correct answer from the options given below :

A
Both (A) and (R) are true and (R) is the correct explanation of (A)
B
Both (A) and (R) are true, but (R) is not the correct explanation of (A)
C
(A) is true, but (R) is false
D
(A) is false, but (R) is true

Question 82Single Answer

The main function of the inner bark of a woody plant is to

A
transport minerals and water from the roots to the leaves
B
act as a membrane impermeable to water and gas
C
transport food from the leaves to the other part of the plant
D
protect the plant from herbivorous animals

Question 83Single Answer

Which one of the following is modification of parenchyma ?

A
Fibres found in phloem
B
Tracheids
C
Vessel
D
Chlorenchyma

Question 84Single Answer

Which one disease of wheat causes a restriction in the export of wheat from India ?

A
Powdery mildew
B
Karnal bunt
C
Black rust
D
Flag smut

Question 85Single Answer

The study of bones is done under the branch of science called

A
Orology
B
Oseology
C
Sermology
D
Geology

Question 86Single Answer

In human the thickest skin is present in

A
palm
B
sole
C
neck
D
head

Question 87Single Answer

Which of the following is not the vestigial human organ ?

A
Tailbone
B
Eardrum muscles
C
Frontal teeth
D
Appendix

Question 88Single Answer

The total number of bones found in newly born human body ?

A
212
B
206
C
202
D
300

Question 89Single Answer

The bone of the which organ is the longest in the human body ?

A
Spinal cord
B
Thigh
C
Rib cage
D
Ankle - bone

Question 90Single Answer

Contractile proteins are found in

A
bones
B
blood
C
muslces
D
cartilage

Question 91Single Answer

Bone matrix is rich in

A
Fluoride and calcium
B
calcium and phosphorus
C
calcium and potassium
D
phosphorus and potassium

Question 92Single Answer

Which one among the following animal tissues transport hormones and heat and maintains water balance ?

A
Connective tissue
B
Muscular tissue
C
Blood
D
Nervous tissue

Question 93Single Answer

Our skin becomes dark in colour when exposed to excess of sunlight . It is due to the presence of :

A
Carotene
B
Melanin
C
Flavoxanthin
D
Haemotoxylene

Question 94Single Answer

Which one of the following statements about phloem is correct ?

A
Phloem transports water and minerals
B
Phloem transports photosynthetic products
C
Phloem is a simple tissue
D
Phloem gives support to the plant

Question 95Single Answer

Mature sclerenchyma cells have

A
cellulose wall and are living
B
lighnified wall and are living
C
suberized wall and are dead
D
lignified wall and are dead

Question 96Single Answer

Which one of the following is used for storing biological tissues ?

A
Liquid nitrogen
B
Liquid helium
C
Liquid argon
D
Liquid bromine

Question 97Single Answer

Squamous epithelial cells are found in the inner lining of

A
Oesophagus
B
Small intestine
C
Ducts of salivary gland
D
Kidney

Question 98Single Answer

Transformation of meristematic cells into specific permanent tissues occurs by the process of

A
Cell differentiation
B
Cell division
C
Cell multiplication
D
Cell regeneration

Question 99Single Answer

If human blood is placed in a 2% detergent solution, what will happen to the RBC ?

A
The RBC will shrink
B
The RBC will swell and become turgid
C
The RBC will swell and burst
D
The RBC will lyse

Question 100Single Answer

Which of the following are energy foods ?

A
Carbohydrates and fats
B
Proteins and mineral salts
C
Vitamins and minerals
D
Water and roughage

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